Sartolab® RF 50 PES Vacuum Filtration Units are single-use vacuum filtration units for volumes up to 50 mL. These units include either a 0.22 µm or a 0.45 µm polyethersulfone (PES) membrane. The PES provides fast flow rates and ensures low protein binding and extractables. These easy-to-use filtration units can be used as stand-alone devices or can be used with the Sartolab® Multistation. This single vacuum source station can simultaneously filtrate up to six samples, virtually hands-free. If using the Sartolab® RF 50 as a stand-alone unit, directly connect the unit’s tubing connector to your vacuum source. Individually packed and sterile.